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The Metasys® Network Control Engine (NCE) Series controllers combine the network supervisor capabilities and Internet Protocol (IP) network connectivity of a Network Automation Engine (NAE) with the Input/ Output (I/O) point connectivity and direct digital control capabilities of a Field Equipment Controller (FEC). NCEs provide a cost-effective solution designed for integrating central plants and large built-up air handlers into your Metasys networks.

All NCE models provide IP Ethernet network connectivity, the Metasys Site Management Portal User Interface (UI), and the network supervisory capabilities featured on NAE35/NAE45 Series network automation engines.

All NCE models provide connectivity to and supervisory control of a specified field bus trunk with up to 32 field controllers. Depending on the model, an NCE25 supports either a BACnet® Master-Slave/Token-Passing (MS/TP) trunk, an N2 Bus trunk, or a LonWorks® network trunk.

All NCE models feature 33 integral I/O points and a Sensor Actuator (SA) Bus, which allow you to increase the NCE’s I/O field point capacity and also integrate NS Series Network Sensors and Variable Frequency Drives (VFDs) into your NCE application.

Some NCE models feature an integral field controller display screen with a navigation keypad. In addition, some NCE models feature an internal modem that supports standard dial-up capabilities.


  • Uses Commonly Accepted Information Technology (IT) Standards at the Automation and Enterprise Level
  • Web-Based User Interface
  • Supervision of Either an N2 Bus, LonWorks Network, or BACnet MS/TP
  • Bus Field Controller Trunk z Multiple Connection Options for Data Access
  • Integral Field Controller with 33 I/O Points
  • Expandable I/O Point Capacity, NS Sensor Connectivity, and VFD Control on Field Controller SA Bus

Download the specification in Pdf format here     Download

NCE25 - Network Control Engine